Improvement in hemmers for sewing-machines



S. A. DAVIS. Hammers for Sewing-Machines.

N0.15l,202. Patented May26,1874.

% 327285593. I I7 vefzior:

AMI/IMM/f/MGMM/L' cam Z/osamm-k moons) UNITED STATES PATENT OFFICE.

STEPHEN A. DAVIS, OF NEWAEK, NEW JERSEY.

IMPROVEMENT IN HEMMERS FOR SEWING-MACHINES.

Specification forming partof Letters Patent No. 15 1,202, dated May 26,1874 application filed 1 January 18, 1873.

To all whom it may concern:

Be it known that I, STEPHEN A. DAVIS, of the city of Newark, county ofEssex and State of New J crsey, have invented certain Im provements inHemmers for Sewing-Machines; and I do declare the following to be afull, clear, and exact description of the same.

The nature of m y invention relates to an improvement in hemmers forsewing-machines; and it consists in the arrangement and combination ofdevices which will be more fully described hereafter, whereby the costof the hennner is decreased, and its adj ustability and eiliciencyincreased.

The accompanying drawings represent my invention.

A represents a fiat irregular-shaped baseplate, having the slot atextending the greater part of its length, up through which extends thescrew by which it is secured in any desired position to the machine. Thefront end of this plate is turned downward, so as to form a flange, l,which serves as a guide for the material, and to this edge is attachedthe plate 2, bent as shown to form the channel B. This channel is formedby a flat plate, 2, curved backward upon itself, as shown in Fig. 3,andthis plate has a slot, b, shown by dotted lines in Fig. 1, cut in itstop, which extends almost its entire length. Upon the top of the platesA 2 is placed the forked scroll-plate D, having a hole, 3, through itsrear end over the slot at,

so that it can be secured in position by the same screw, which holds theplate A. The front end of one of the prongs is slightly cut away andbent downward through the slot 1), and has the tube or scroll O securedto it, so that as the scroll-plate Dis adjusted back and forth the tubeis moved with it in the channel B, so as V to regulate the width of thehem being sewed. To this prong is also secured the spring E, whichpresses down upon the goods being sewed, so as to hold them in place andproduce an even tension upon them. The other prong passes through aguiding and retaining loop, 0, which may be either stamped up or securedto the top of the plate A, and is held in position, if so desired, by asmall setscrew. Upon the top of the prong is marked a scale, d, formeasuring the width of the hem desired.

Having thus described my invention, I claim- The slotted base-plate A 1,having the slotted plate 2 bent to form the channel B secured to it, incombination with the loop 0, and scrollplate D, having the tube 0 andspring E secured to it, and having a scale marked upon one of its forksor prongs, substantially as shown and described.

STEPHEN A. DAVIS.

Witnesses: i

OLIVER DRAKE, CHAS. Baron.

